[Music] welcome to english listening and vocabulary [Music] part three you will hear two food science students called adam and rosie starting to plan their presentation on diet and obesity first you have some time to look at questions 21 to 24 [Music] now listen carefully and answer questions 21 to 24. okay rosie shall we try to get some ideas together for our presentation on diet and obesity sure i can talk about the experiment i did to see if people can tell the difference between real sugar and artificial sweeteners where you gave people drinks with either sugar
or artificial sweeteners and they had to say which they thought it was yeah it took me ages to decide exactly how i'd organize it especially how i could make sure that people didn't know which drink i was giving them it was hard to keep track of it all especially as i had so many people doing it i had to make sure i kept a proper record of what each person had had so could most people tell the difference yeah i hadn't thought that they would be able to but most people could then there's that experiment
i did measuring the fat content of nuts to see if the nutritional information given on the packet was accurate the one where you ground up the nuts and mixed them with a chemical to absorb the fat yes my results were a bit problematic the fat content for that type of knot seemed much lower than it said on the package but i reckon the package information was right i think i should probably have ground up the nuts more than i did it's possible that the scales for weighing the fat weren't accurate enough too i'd really like
to try the experiment again sometime before you hear the rest of the discussion you have some time to look at questions 25 to 30. [Music] now listen and answer questions 25 to 30. so what can we say about helping people to lose weight there's a lot we could say about what restaurants could do to reduce obesity i read that the items at the start of a menu and the items at the end of a menu are much more likely to be chosen than the items in the middle so if you put the low calorie items
at the beginning and end of the menu people will probably go for the food with fewer calories without even realizing what they're doing i think food manufacturers could do more to encourage healthy eating how well when manufacturers put calorie counts of the food on the label they're sometimes really confusing and i suspect they do it on purpose because food that's high in calories tastes better and so they'll sell more yeah so if you look at the amount of calories in a pizza they'll give you the calories per quarter pizza and you think oh that's not
too bad but who's going to eat a quarter pizza exactly i suppose another approach to this problem is to get people to exercise more right in england the current guidelines offer at least 30 minutes of brisk walking five days a week now when you ask them about 40 percent of men and 30 percent of women say they do this but when you objectively measure the amount of walking they do with motion sensors you find that only six percent of men and four percent of women do the recommended amount of exercise hmm so you can see
why obesity is growing so how can people be encouraged to take more exercise well for example think of the location of stairs in a train station if people reach the stairs before they reach the escalator when they're leaving the station they're more likely to take the stairs and if you increase the width of the stairs you'll get more people using them at the same time it's an unconscious process and influenced by minor modifications in their environment right and it might not be a big change but if it happens every day it all adds up yes
but actually i'm not sure if we should be talking about exercise in our presentation well we've done quite a bit of reading about it i know but it's going to mean we have a very wide focus and our tutor did say that we need to focus on causes and solutions in terms of nutrition oh i suppose so and we've got plenty of information about that okay well that will be simpler so what shall we do now we've still got half an hour before our next lecture let's think about what we're going to include and what
will go where then we can decide what slides we need okay fine that is the end of part three you now have half a minute to check your answers to part three [Music] subscribe to the channel for more videos support us by clicking on the like button and leaving your comments here thank you
